arg(bar(z))+arg(-z)={{:(pi",","if arg (z...

`arg(bar(z))+arg(-z)={{:(pi",","if arg (z) "lt 0),(-pi",", "if arg (z) "gt 0):},"where" -pi lt arg(z) le pi`.
If `arg(z) gt 0`, then arg (-z)-arg(z) is equal to

A

`-pi`

B

`-(pi)/2`

C

`pi/2`

D

`pi`

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The correct Answer is:

A

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